Standard 4/Middle School/Benchmark 6
Benchmark Question: How do mechanical waves transfer
Focus Question: How is energy transferred through a
The teacher will present a
demonstration to the whole group or ask small groups to conduct
investigations following the procedures below:
1. Stretch a slinky across the floor.
2. Quickly push the slinky forward and pull it quickly
back to its original position.
3. Describe the motion of the coils in a slinky.
4. Put a piece of tape on one of the coils.
5. Describe the motion of the tape and the motion of the
6. Repeat this motion.
7. Record observations of the movement of the wave
through the entire slinky (reflection).
8. Record observations of how the coils interact with
one another to produce the wave.
Each student will write a
lab report that includes answers to the following questions:
- How is the energy transferred from one end
of the slinky to the other (collision of one coil into another)?
- What do the coils represent (the particles
of matter in a medium)?
- How is this movement like an earthquake
- How is this movement like a water wave?
- How is this movement like a sound wave?
Extension: Have students research the use or
effects of waves in real-world situations (e.g., the new technologies used
in building earthquake-resistant buildings, in ultrasound technology, in
lithotriptors, in sonar, etc.